Dinner with Lydia (and John)

After a good night, you and the group spend a relaxing day at the hotel, enjoying all of its offers. Throughout the day,you and Lydia slowly set a new plan in motion.
Lydia asks John to go to the fancy restaurant in town with her, while you claim to ask the overs as well, subtly teeling them to go watch a movie instead.

While John still thinks the whole group is gonna meet at the restaurant at 7:30 in the evening, you and Lydia go half an hour early, already taking place at a table and ordering some wine. Lydia looks stunning. She put on makeup with sharp eyeliner and red lipstick, together with a tight black dress with a low neckline dress. She almost looks like an expensive hooker, but slightly more elegant. Around her neck is the chain with Johns chastity key on it, hanging between her boobs visible for everyone. She wears some jewelry and while the two of you talk while you wait for John, her hand softly glides across your thigh.

Then, after around 20 minutes, she looks up and smiles. "There he is"

John approaches the table, looking a bit confused. Right now, you still sit on a chair across Lydia, which sits on a bench with a large back piece, coated in red fabric. Now, after you get up to greet John, you instead take place next to her, letting John sit at the chair across the two of you while you´re right next to Lydia.

You quickly explain that the others had some change in their plans, then he orders a drink as well.

You notice John glimpsing over to the chain on Lydias neck every now and again, and you cant blame him.
As the waitress takes your food orders, she looks over at Lydia and you. "If you want, you can get the couples menu, and save some money."
Lydia smiles. "Moneys not a problem. My boyfriend-" she points at John, "Agreed to pay today. But still, the both of us (she rests her head on your shoulder) will take the couples menu, why not."
The waitress looks confused for a second, but then smiles. "Of course. Good choice."

While the three of you eat, you talk about nothing special, although Lydia sometimes laughs a bit extra at some of your jokes, or leans over to you to whisper something in your ear.
While you wait to pay, her hand vanishes under the table, making its way to your thigh again, just out of Johns sight.
You smile as you watch while he tries to catch a glimpse of whats happening without being to obvious.

Then you pay and head out.

You wander a bit through the historic city center, John and Lydia hold hands, but as you stand by a fountain Lydia whispers something in her boyfriends ear, and then, without letting go of his hand, kisses you.

Her lips are soft, yet its clear she knows what she does. You dont really make out, but it takes a couple of seconds for you to seperate again. You catch some people staring at you. This really marked your best friend as a cuck out in public now.
While you walk a bit more, every now and then Lydia kisses you, never letting go of her boyfriends hand.
Then you decide to head abck to the hotel.

John gets in the car to drive, but neither you or Lydia sit down next to him. Instead, the two of you take place on the back seats. While her boyfriends drives the two of you back, you begin to really make out with Lydia.

After arriving at the hotel you grab her hand and lead her to hers and Johns room, leaving him to follow more like an afterthought.
He unlocks the door for the two of you and you go in.

Lydia lets herself fall on the bed, laying on her back, and looks up at you. You know what you have to do.